package net.shuzun.openapi.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public class RequestUtil {

    public static String sendGet(String url, Map<String, String> paramMap) throws Exception {

        if (url.endsWith("/")) {
            url = url.substring(0, url.length() - 1);
        }
        StringBuffer buffer = new StringBuffer(url).append("?");
        for (Iterator<Entry<String, String>> iterator = paramMap.entrySet().iterator(); iterator.hasNext();) {
            Entry<String, String> entry = iterator.next();

            buffer.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), "UTF-8")).append("&");

            if (!iterator.hasNext()) {
                buffer.deleteCharAt(buffer.length() - 1);
            }
        }

        String result = "";
        BufferedReader in = null;
        try {
            URL realUrl = new URL(buffer.toString());
            System.out.println(buffer);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            // 建立实际的连接
            connection.connect();
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            throw e;
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    public static String sendPost(String url, Map<String, String> param) throws Exception {

        StringBuffer buffer = new StringBuffer();
        if (param != null && !param.isEmpty()) {
            for (Entry<String, String> entry : param.entrySet()) {
                buffer.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), "UTF-8"))
                        .append("&");

            }
            buffer.deleteCharAt(buffer.length() - 1);
        }

        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(buffer);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            throw e;
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }
}
